I don't think mutations are all that good. Old claw was broken, but now it's not as good as Mighty Blow. Mutations also force players into positions, and I like to keep my players generalists so my opponent can't pick me apart.
I hate AG access on Ungors. What are you going to skill into, blodging leaping catching Ungors? They should be a nuisance, like block and tackle, not blodge and sprint. I like them as passers a lot more. And, as a Beastmen team, everybody should have horns.
The whole team has horns, and mutations on doubles.
Ungor 40k - 6 3 3 7 - horns, pass - G
Obviously, Gors should just be called Beastmen, and have the same price and skill access, except with Mutation on doubles.
Gor 60k - 6 3 3 8 - horns - GS
Either drop Bestigors, or replace a point of strength for the block skill. Make them more like Skaven Blitzers.
Bestigor 90k - 6 3 3 8 - horns, block - GS
Currently, Centigors are ball carriers, and they should be more like Blitzers. Drop an agility, and remove sprint, because without sure feet it's just a liability. That's a 50% to possibly fall and die each turn. Juggernaut doesn't make sense on them. Horns, sure feet, sprint, is probably the best. Which is still dumb, because they're just bull centaurs, except bull centaurs actually have decently sized horns, but not the skill.
Centigor 120k - 7 4 3 8 - horns, sprint, sure feet, tackle - GS
Then just rename Bullgor Minotaur. Why change that?